domains: remove SECRET_PLACEHOLDER from responses

src/dns/route53.js

@@ -1,15 +1,5 @@
 'use strict';
 
-exports = module.exports = {
-    removePrivateFields,
-    injectPrivateFields,
-    upsert,
-    get,
-    del,
-    wait,
-    verifyDomainConfig,
-};
-
 const assert = require('node:assert'),
     BoxError = require('../boxerror.js'),
     { ConfiguredRetryStrategy } = require('@smithy/util-retry'),
@@ -23,12 +13,12 @@ const assert = require('node:assert'),
     _ = require('../underscore.js');
 
 function removePrivateFields(domainObject) {
-    domainObject.config.secretAccessKey = constants.SECRET_PLACEHOLDER;
+    delete domainObject.config.secretAccessKey;
     return domainObject;
 }
 
 function injectPrivateFields(newConfig, currentConfig) {
-    if (newConfig.secretAccessKey === constants.SECRET_PLACEHOLDER) newConfig.secretAccessKey = currentConfig.secretAccessKey;
+    if (!Object.hasOwn(newConfig, 'secretAccessKey')) newConfig.secretAccessKey = currentConfig.secretAccessKey;
 }
 
 function createRoute53Client(domainConfig) {
@@ -270,3 +260,13 @@ async function verifyDomainConfig(domainObject) {
 
     return credentials;
 }
+
+exports = module.exports = {
+    removePrivateFields,
+    injectPrivateFields,
+    upsert,
+    get,
+    del,
+    wait,
+    verifyDomainConfig,
+};